<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>arguments.callee</title>
</head>
<body>

</body>
<script>
    // arguments.callee
    // 求 10 的阶成
    var num = (function (n) {
        if (n == 1) {
            return 1;
        }
        return n * arguments.callee(n - 1);
    }(10));
</script>
</html>
